One of the few things I know about writing is this: spend it all, shoot it, play it, lose it, all, right away, everytime. Do not hoard what seems good for a later place in the book, or for another book; give it, give it all, give it now. The impulse to save something good for a better place later is a signal to spend it now. Something more will arise for later, something better. These things fill from behind, from beneath, like well water. Similarly, the impulse to keep to yourself what you have learned is not only shameful, it is destructive. Anything you do not give freely and abundantly is lost to you. You open your safe and find ashes. --Annie Dillard. The Writing Life.
In our modern consumer society, where everything seems to have a price attached, it is hard not to be "strategic" about the "products" of your imagination. I have even heard "perceived generosity" is a good PR tactic. I doubt that such self serving generosity would qualify for the "giving freely and abundantly" that Dillard espouses. It is true that win-win situations exist. However, erring on the side of generosity rather than mere self-interest seems, to me, to be a default route that provides true connection and prevents ash collection.